- Author: Colin Allen, Michael Hand, Michael Hand
- Language: English
- Year: 2022
- Author: Colin Allen (editor)
- Language: English
- Year: 1998
- Author: Blanchard Colin, Allen Angela, Blanchard Colin, George Vanessa, Clarkson Wensley
- Language: English
- Year: 2010
- Author: Colin Allen Michael Hand
- Language: English
- Year: 1992
- Author: Colin Allen Michael Hand
- Language: English
- Year: 2001
- Author: Colin Allen Marc Bekoff
- Language: English
- Year: 1999
- Author: Wendell Wallach Colin Allen
- Language: English
- Year: 2008
- Author: Colin Allen Michael Hand
- Language: English
- Year: 2001
- Author: Wendell Wallach Colin Allen
- Language: English
- Year: 2008
- Author: Colin Allen Michael Hand
- Language: English
- Year: 2001